Process for the manufacture of hollow bodies and especially of head-coverings from fibrous material.



R. KNOLL. rnocnss FOR THE MANUFACTURE or HOLLOW nomns AND ESPECIALLY or HEAD oovnnmes FROM Fnmous MATERIAL.

-APPLIOA/TION FILED 11017.12, 1908.

993,605. Patented May 30, 1911.

INVENTOR,

RUDOLF KNOLL,

wWNEssEs, r y

Attorney;

not.

I RUDOLIE KNOLL, E VIENNA, AUSTRIA-HUNGARY. ASSIGNOR TO GESIiiLLSCHAFT ZUR VERWERTUNG DER HOHLK6RIEEPATENTE DR. KNOLL G. M. B. 1-1., 01:? VIENNA,

lid

AUSTRIA-HUNGARY.

PROCESS FOR THE MANUFACTURE OF HOLLOW BODIES AND ESPECIALLY 0F HEAD- GOVERINGS FROM FIBRO'US MATERIAL.

ceases.

Specification of Letters Patent.

Application filed November 1%, 1908.

Patented May 30, 1911.

serial no. 462,291.

To all whom it may concern:

Be it known that l, Runonr KNOLL, a subject of the Emperor of Austria-Hungary, residing at Vienna, lirustria-Hungary, have invented a new and useful Process for the Manufacture of Hollow Bodies and Espe cially of Head-Coverings from Fibrous Materials; and I do hereby declare the following to be a full, clear, and exact descrip' tion of the same. According to the lrnown methods for the manufacture of headcoverings from fibrous materials, the fibrous material is collected from a suitable viscous mass placed on a perforated form or mold by means of suction, and the perforated hat shape has usually been maintained in a stationary position during the process of deposition and connected with a special suction device.

The present invention has for its object to obviate the necessity for employing such special suction devices and thus to render the entire process of manufacture both more 7 simple and expeditious. In accordance with this invention this is effected by arranging the form or mold in such manner that it can be moved in the fibrous pulpy mass and by providing it with adownwardly extending external casing, preferably of funnel shape, the collection and settling of the fibrous material on the form or mold being effected by a vertical reciprocating motion, which moreover produces the vacuum requisite for the quick and uniform deposition of the fibrous material.

The shapes obtained by means of the process just described can, after they have been freed from the adhering moisture, be used either at once without any further manipulation, or after they have been impregnated with a stiffening material, as head coverings or asintermediate products for the manufacture of such coverings.

In the reduction of this process to practice, the fibrous material, preferably consisting of cellulose or a mixture of cellulose with other cheaper fibers, is soaked in water until there is obtained therefrom a mass resembling stuff or pulp. The form or mold by means of which this stud is collected is pern'ieable by liquids.

Referring to the drawing which forms a part of this specification Figures 1 and 3 are hollow-forms a or Big, 2 is a core form a.

This form which may consist of wire net ting, woven material or the like, is provided with a downwardly projecting external casing, in which during the movements of the form a, through the stuff 0 as aforesaid there is produced a vacuum the degree of which depends on the permeability of the mold, the quickness of its movcment,and the height of the surrounding casin The casing may be mnel shaped (b, Fig. 1) or cylindrical (1), Fig.2) or conical (b Fig. 3). The manipulation of the mold is efiected by means of handles such as 03 secured to the up er end of the casing.

Having now described my invention what I claim as new and desire to secure by Letters Patent is: v

1. A process for the manufacture of hollow bodies, especially head coverings, from fibrous pulp, which process consists in providing a perforated band mold with a downwardly extending petticoat casingopen at the bottom lowering said mold and easing below the upper level of the fibrous pulp, whereby pulp is deposited upon the mold, and then raising the mold and casing until all but the lower part of the casing is re moved from the pulp.

2. Process for the manufacture of hollow bodies, especially head coverings, from fibrous material, which consists in immersing in a fibrous pulp a foraminated form, inclosing the same in a casing, and raising the form vertically in the fibrous pulp, until all but the lower edge of the casing is re moved, substa tially as set forth.

3. Process ft the manufacture of hollow till bodies, especially head coverings, from In testimeny whereof, I have signed my fibrous mammal, whlch conszsts m lmmersname to tlus speclficatlon 1n the presence of mg 111 a fibrous pulp a, loiammated mold, 111 two subscrlblng wltnesses.

closing the same in a casing, and raising the RUDOLF KNOLL. 5 form 'vertlcally until all but thca lower para l'Vlinasslasz of the casmg 1s removed from the pulp, subhm. ALFRED lQLOR,

stantially as set forth ROBERT W. HEINGARTNEB. 

